Error when using podman with hadolint image

[tschm]

• This is a bug report
• This is a feature request
• I searched existing issues before opening this one

Expected behavior

Actual behavior

Hadolint hangs as the image doesn't seem to return anything when used with podman

Steps to reproduce the behavior

Use any Dockerfile and

podman run --rm -i docker.io/hadolint/hadolint:2.6.0-debian < .

[tschm]

This may help: containers/podman#3323

[wULLSnpAXbWZGYDYyhWTKKspEQoaYxXyhoisqHf]

Use any Dockerfile and

podman run --rm -i docker.io/hadolint/hadolint:2.6.0-debian < .

This does not work on my Docker hosts either, meaning if I run your thing in Docker, it does not return anything, too, same as podman.

I believe what you might have meant to do with the command is to pass it just the Dockerfile instead of whole ., like so:
podman run --rm -i docker.io/hadolint/hadolint:2.6.0-debian < Dockerfile

For the record, the above works with both Docker version 20.10.8, build 3967b7d28e and podman version 3.3.1.

[0uep]

Hi @tschm

I also use Podman. The following script hadolint is in my $PATH and runs the current downloaded image docker.io/hadolint/hadolint:

#!/bin/bash
dockerfile="$1"
shift
podman run --rm -i docker.io/hadolint/hadolint hadolint "$@" - < "$dockerfile"

This script hadolint need to be used in this way:

hadolint path/to/your/Dockerfile [OPTIONS]

I sometimes upgrade my local image docker.io/hadolint/hadolint:

podman pull docker.io/hadolint/hadolint

I think this a good way to securely rum Hadolint with upgrade ease.

Moreover, this script works fine with the current version of the extension vscode-hadolint
https://github.com/michaellzc/vscode-hadolint

Note: I also use vscodium.com + open-vsx.org

[0uep]

Hi @lorenzo

Would you mind if the README explains how to use Hadolint with Podman?
You may also share the tips from my previous message.

Thank you for maintaining Hadolint. 😄

[lorenzo]

Your contribution will be very welcomed @0uep :)